It's a bit hard to see, but the dinosaur in the cage being lifted into the zeppelin (floating above the scene) is a Tyrannosaurus, the one behind Erwin is a Triceratops, the one in the other cage is a Stegosaurus, and there's a Pteranodon (which isn't technically a dinosaur) chained on to the ground.

Sometimes, like in today's strip, there's just a lot of detail that is lost when I shrink the pictures down to fit in the strip. In all, they're shrunk to 8% of the original size that comes out of my camera. To give you an idea of the details visible in the full image, here's panel 3, shrunk to only a quarter of its original size.

You can also see how merciless the depth of field is shooting this close to a subject - thankfully that's masked a lot when I shrink the images further.